code: def isspmatrix_csc(x):
      """Is `x` of csc_matrix type?
  
      Parameters
      ----------
      x
          object to check for being a csc matrix
  
      Returns
      -------
      bool
          True if `x` is a csc matrix, False otherwise
  
      Examples
      --------
      >>> from scipy.sparse import csc_array, csc_matrix, coo_matrix, isspmatrix_csc
      >>> isspmatrix_csc(csc_matrix([[5]]))
      True
      >>> isspmatrix_csc(csc_array([[5]]))
      False
      >>> isspmatrix_csc(coo_matrix([[5]]))
      False
      """
      return isinstance(x, csc_matrix)
  
imports: import numpy
  from ._matrix import spmatrix
  from ._base import _spbase, sparray
  from ._sparsetools import csc_tocsr, expandptr
  from ._sputils import upcast
  from ._compressed import _cs_matrix
label_desc: Use image node_id 1 for calling a global function with example usage: isspmatrix_csc(x) and returns: isinstance